US1231589A - Traveling-bucket apparatus. - Google Patents

Description

J. C. FRENCH.

TRAVELING BUCKET APPARATUS.

APPLICATION FILED FEB. 7. 1916.

1 231 $89., Patented July 3,1917.

2 SHEETS-SHEET 1'- I. C. FRENCH.

TRAVELING BUCKET APPARATUS.

APPLICATION FILED FEB. Z. 1916.

1,23 1 ,589 D Patented July 3, 1917..

2 SHEETS-SHEET 2.

fja

tl'blfTED %TATE% T @ldllll@lE.

JAME$ FRENCH, 0F KEN OSHA, WISCONSIN, ASSIGNOB, TO FREDERICK C. AUSTIN, OF

' CHICAGO, ILLINOIS.

TRAVELING-BUCKET APPARATUS.

Application filed February 7, 1916.

To all whom it may concern:

Be it known that I, JAMES C. FRENCH, a citizen of the United States of America, and resident of Kenosha Kenosha county, Wisconsin, have invented a certain new and useful Improvement in TravelingBucket Apparatus, of which the following is a specification.

My machine relates to traveling bucket apparatus in general, but more particularly to apparatus of this kind in which a bucket travels back and forth on a track or runway, T such as the swinging derrick arms, or booms, employed by portable concrete mixing plants employed in paving streets. In apparatus of this general character, the bucket must receive a load, then travel outward on the track or swinging boom until it reaches the desired point of discharge. When this point is reached, the load is dumped, and then the bucket must travelback to receive another load.

Generally stated the object of my invention is to provide an improved construction whereby the operation ofthe bucket to dump the load, as well as for resuming the return thereof to carrying position, is accomplished automatically through the medium of the lines which pull the bucket in opposite directions, thus making it possible to merely' draw the loaded bucket to the place of discharge, and to then dump the load by merely I reversing the direction of. travel of the bucket, as well as to then restore the bucket from its dumping position to its carrying position before receivinganother load.

Another object is to provide an apparatus of this kind in which the construction is of such character that the said bucket may comprise two pivot sections which swing apart to dump the load, being what is ordinarily known as a clam shell bucket, which is a, common type, for the reason that the two halves of the bucket open and close at their lower edges.

It is also an object to provide certain details and features of construction and combinations tending to increase. the general elficiency and desirability of traveling bucket apparatus of this particular character.

Specification of Letters Patent.

7 Patented July 3, 191W. Serial No. 76,512.

To the foregoing and other useful ends, my inventlon consists in matters hereinafter set forth and claimed.

In the accompanying drawings Figure 1 is a side elevation of a traveling bucket apparatus embodying the principles of my invention.

. Fig. 9. is a detail sectional view showing the dumping mechanism in position to keep the bucket closed.

Fig. 3 is a vertical-section on line 3--3 in Fig. 1.

As thus illustrated, my invention comprises a track or runway A of any suitable character, and a traveler B having wheels 6 which travel on said track. The lower portion of the traveler has a swivel C which supports the bucket D, the latter being of the cla1n-shell type, comprising two halves of sections d which are pivotally connected at 1, in the usual and well-known manner. The straps or bars E are pivoted at their upper ends on the rotary portion C of the said swivel, and at their lower ends these straps or bars are .pivoted at e to the outer sides of the two sections of the bucket. The plates 2 are pivoted at 3 to the outer ends of the arms 4 which are rigid with the lower portion C of the swivel, and the upper ends of the said straps or bars E are pivoted at 5 upon these plates. Chains 6 connect the lower ends of these plates 2 with the pivotal joints 1 of the bucket, so that when the bucket is open, as shown in full lines in Fig. 1 the said chains serve to limit the separation of the two sections of the bucket at their lower edges. A post 7 extends upwardly from the frame of the traveler, between the sides of the track, and is provided with a horizontally movable slide 8, the sliding movement of the latter being limited by the length of its slot 9 through which the pin 10 on the said post extends. A line F is secured to one end of this slide 8, and a line G is secured to the other end thereof, these lines being operated in a suitable manner to pull the traveler back and forth on the track, By reason of the slot 9, there is some lost motion, so to speak, and

the bucket will not start in eitherdirection until this lost motion is taken up by either line. A shaft 10 is mounted horizontally and transversely immediately above the swivel; C, and arms 11 and 12 are lined on this shaft, the arm 11 having a longitudinal slot 13, and the arm 12 having its end provided with a roller 1 1; and alink 15 having a roller 16 is pivoted on the traveler at 17, said roller being disposed in the slot 13, and the pivotal point 17 being directly above the shaft 10 and in the vertical planes thereof. The slide 8 is provided with a pivoted dog 18 for engaging the upper end of the link 15, whereby this link and the arm 11 are thrown into the position shown in Fig. 1 when a pull. is exerted on the line F to reverse the direction of travel of the bucket. The arm 12 swings between the front and rear portions 19 and 20 of the traveler frame, and may be limited in its movements thereby, although any other suit- 7 able means can. be employed for limiting the rotation of the shaft 10 and the movements of the other parts. A chain H. connects the pivot-joint of the bucket with the upper end of the link 15, this chain extending upward through the swivel C, which latter is made tubular or hollow for that purpose, and the chain then passing upward in the manner shown in Fig. 1. In this way, when the bucket is in carrying position, as shown in dotted lines in Fig. 1, the outward pull on the chain H does not tend to. throw the link 15 over and into the position. shown in Fig. 1, for the reason that the weight of the arms 11 and 12 and the link 15 is practically all at the other side of the center, as shown in Fig. 2, and for the further reason that the pull on the chain is very nearly parallel with the link 15., whereby the mechanism supports the bucket in carrying position.

The dumping operation is as follows: The bucket is pulled outward upon the runway in loaded: condition. by the line G, and when the desired point of discharge is reached the motion is reversed by a pull on the line F, so that the slide 8 moves forward and causes the dog 18 to push the arm 11 over the center, and the weight of the load then causes the chain H to pull the parts into the position shown in Fig. 1 thus allowing the bucket to open and dump the load. The bucket is then pulled along by the line F until the roller 1e strikes the stop 21 on the under side of the track, and this pushes the roller 14 and its arm 12 back into the position shown 1n Fig. 2, thus producing. an up ward pull. on the chain H which closes the bucket. The bucket having received another load, a pull is then exerted on the line G to again draw the bucket outward on the track, but the bucket does not start in this direction until the slide 8 reaches the limit of its motion relative to the post 7, so that the parts are then in the condition shown in Fig. 2, the pivoted dog 18 having risen over the upper end of the arm 11 and then settled into locking position thereon. In this posi; tion, the bucket and its dumping mechanism are in condition to again be operated by a pull on the line F to dump the load by throwing the mechanism into the position shown in Fig. 1, so. that the bucket will open and discharge the contents thereof.

Thus the bucket, preferably a clam shell bucket, is automatically dumped by merely and its dumping mechanism to the condition necessary for carrying a load is then accomplished automatically by 'the final pull on the line F, and the mechanism is then entirely restored by the pull which is exerted on the line G to. draw the bucket outward on the boom or runway A, thereby insuring the condition of said mechanism which is necessary for dumping the load as. soon as the bucket reaches the desired point of discharge and as soon as the travel this direction is discontinued and the initial. pull is exerted on the line F to reverse the direction of travel.

What I claim is my invention. is

1-. A traveling bucket apparatus comprising a track, a traveler on said track, lines to pull the traveler back and forth on said track, a. bucket hung on said traveler, a dumping connection for said bucket, a movable element on said traveler to hold said connection in position for keeping the load in, the bucket, a device operated by one of said lines to shift said element into dumping position when the motion of the traveler device including, a. slide having. adog to engage the upper end of' said element.

a roller associated With said element, a shift- 3. The said apparatus (substantially as ing connection between said roller and eleset forth in claim 1), said means including a pivoted arm having a longitudinal slot therein, and means on said element to slide .5 in said slot.

4. The said apparatus (substantially as set forth in claim 1), said means including engage said roller.

Signed by me at Chicago, Illinois, this 29th day of January, 1916.

JAMES C. FRENCH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

ment and a stationary stop on said track to

Images